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October 21, 2011, 07:55 |
forces in interFoam
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#1 |
New Member
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Hello all!
I have some problems to get forces with standard library libforces.so for interFoam solver. I found one article from workshop, in which author made own library (libhullForce.so)(http://www.openfoamworkshop.org/6th_...m/training.htm) to calculate forces in two-phase liquid. I took his case with BC, controlDict, fvSchemes and fvSolution and changed only geometry. But result that i got is not correct. Forces are greater that in experimet about 5-8 times. I saw my controlDict and found that in below entry forces { type forces; functionObjectLibs ("libforces.so"); patches (hull_wall); rhoName rhoInf; rhoInf 1000; CofR (0 0 0); outputControl timeStep; outputInterval 1; } there is only one density - rhoInf equals to 1000. Can libforces.so calculate forces only for monophase liquids? I use openFoam 2.0.0. Is my guess true? How is it possible to get forces components manually? |
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May 9, 2012, 13:31 |
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#3 |
Senior Member
Dave
Join Date: Jul 2010
Posts: 100
Rep Power: 16 |
Svensson,
Currently you are setting the rho equal to rhoInf for all force calcs. Use "rhoName rho;" since this is the scalar field that varies in space with alpha. Hope this helps, Dave |
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forces, interfoam |
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